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<title>Direct Contiguity Data, Version 3</title>
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<h2>SAB, 2/6/02</h2>

<p class=MsoNormal><b><span style="FONT-SIZE: 10pt; mso-bidi-font-size: 12.0pt"><![if !supportEmptyParas]><![endif]>&nbsp;<o:p></o:p></span></b></p>

<h1 align=center style="TEXT-ALIGN: center">Correlates of War</h1>

<h1 align=center style="TEXT-ALIGN: center">Direct Contiguity Data, Version 3.0</h1>

<p class=MsoNormal align=center style="TEXT-ALIGN: center"><b><span
 style="FONT-SIZE: 14pt; mso-bidi-font-size: 12.0pt">1816�2000<o:p></o:p></span></b></p>

<p class=MsoNormal align=center style="TEXT-ALIGN: center"><b><span
 style="FONT-SIZE: 14pt; mso-bidi-font-size: 12.0pt">Files and Formats<o:p></o:p></span></b></p>

<p class=MsoNormal><![if !supportEmptyParas]><![endif]>&nbsp;<o:p></o:p></p><b>
<H4>Direct Contiguity Master File</H4>
<P>This file contains the master records of version 3.0. It is the one from 
which all other files are ultimately derived and to which all future changes 
will be made. It has a non-directed format in order to prevent asymmetries from 
accidentally being introduced into the data set. It is a text file written in 
comma-separated-variable (CSV) format, and&nbsp;the variable names are given in 
the first&nbsp;record&nbsp;in the file. The format&nbsp;of the remaining records 
is as follows.</P>
<P class=MsoNormal>
<TABLE align=center>
  
  <TR>
    <TH align=left width=75>Field</TH>
    <TH align=left width=75>Type</TH>
    <TH align=left>Contents</TH></TR>
  <TR>
    <TD>StateLNo</TD>
    <TD>Integer</TD>
    <TD>COW state number of lower numbered member of state pair</TD></TR>
  <TR>
    <TD>StateLAb</TD>
    <TD>Text</TD>
    <TD>COW state abbreviation of lower numbered member of state pair</TD></TR>
  <TR>
    <TD>StateHNo</TD>
    <TD>Integer</TD>
    <TD>COW state number of higher numbered member of state pair</TD></TR>
  <TR>
    <TD>StateHAb</TD>
    <TD>Text</TD>
    <TD>COW state abbreviation of higher numbered member of state pair</TD></TR>
  <TR>
    <TD>ContType</TD>
    <TD>Integer</TD>
    <TD>Type of direct contiguity, 1-5</TD></TR>
  <TR>
    <TD>BegYear</TD>
    <TD>Integer</TD>
    <TD>Start year of direct contiguity</TD></TR>
  <TR>
    <TD>EndYear</TD>
    <TD>Integer</TD>
    <TD>End year of direct contiguity</TD></TR>
  <TR>
    <TD>Note</TD>
    <TD>Text</TD>
    <TD>Special information about this direct contiguity</TD></TR>
  <TR>
    <TD>Version</TD>
    <TD>Single</TD>
    <TD>Version number (3.0 for all records)</TD></TR></TABLE></P>
<H4>Dyadic Direct Contiguity</H4>
<P>This file is derived from the master file and includes annual records for 
each (directional) pair of states that is directly contiguous. Dyad-years in 
which direct contiguity is absent are not included in the file to reduce greatly 
the size of the file. Users may assume that if no record is present for a given 
dyad-year, no direct contiguity exists between the state pair in that 
year.&nbsp; It is a text file written in comma-separated-variable (CSV) format, 
and&nbsp;the variable names are given in the first&nbsp;record&nbsp;in the file. 
The format&nbsp;of the remaining records is as follows.</P>
<P class=MsoNormal>
<TABLE align=center>
  
  <TR>
    <TH align=left width=75>Field</TH>
    <TH align=left width=75>Type</TH>
    <TH align=left>Contents</TH></TR>
  <TR>
    <TD>State1No</TD>
    <TD>Integer</TD>
    <TD>COW state number of first member of state pair</TD></TR>
  <TR>
    <TD>State1Ab</TD>
    <TD>Text</TD>
    <TD>COW state abbreviation of first member of state pair</TD></TR>
  <TR>
    <TD>State2No</TD>
    <TD>Integer</TD>
    <TD>COW state number of second member of state pair</TD></TR>
  <TR>
    <TD>State2Ab</TD>
    <TD>Text</TD>
    <TD>COW state abbreviation of second member of state pair</TD></TR>
  <TR>
    <TD>Year</TD>
    <TD>Integer</TD>
    <TD>Year of observation</TD></TR>
  <TR>
    <TD>ContType</TD>
    <TD>Integer</TD>
    <TD>Type of direct contiguity, 1-5</TD></TR>
  <TR>
    <TD>Version</TD>
    <TD>Single</TD>
    <TD>Version number (3.0 for all records)</TD></TR></TABLE></P>
<H4>National Direct Contiguity</H4>
<P>This file is derived from the Dyadic Direct Contiguity file and includes 
annual records for all states that have a direct contiguity to at least one 
other state. It is a text file written in comma-separated-variable 
(CSV)&nbsp;format, and&nbsp;the variable names are given in the 
first&nbsp;record&nbsp;in the file. The format&nbsp;of the remaining records is 
as follows.</P>
<P class=MsoNormal>
<TABLE align=center>
  
  <TR>
    <TH align=left width=75>Field</TH>
    <TH align=left width=75>Type</TH>
    <TH align=left>Contents</TH></TR>
  <TR>
    <TD>StateNo</TD>
    <TD>Integer</TD>
    <TD>COW state number of state</TD></TR>
  <TR>
    <TD>StateAb</TD>
    <TD>Text</TD>
    <TD>COW state abbreviation of state</TD></TR>
  <TR>
    <TD>Year</TD>
    <TD>Integer</TD>
    <TD>Year of observation</TD></TR>
  <TR>
    <TD>Total</TD>
    <TD>Integer</TD>
    <TD>Total number of direct contiguities</TD></TR>
  <TR>
    <TD>Land</TD>
    <TD>Integer</TD>
    <TD>Total number of direct contiguities by land (type = 1)</TD></TR>
  <TR>
    <TD>Sea</TD>
    <TD>Integer</TD>
    <TD>Total number of direct contiguities by sea (type &gt; 1)</TD></TR>
  <TR>
    <TD>Version</TD>
    <TD>Single</TD>
    <TD>Version number (3.0 for all records)</TD></TR></TABLE>   </b><![if !supportEmptyParas]><![endif]><![if !supportEmptyParas]><![endif]><![if !supportEmptyParas]><![endif]><![if !supportEmptyParas]><![endif]><![if !supportEmptyParas]><![endif]><![if !supportEmptyParas]><![endif]><![if !supportEmptyParas]><![endif]><![if !supportEmptyParas]><![endif]></P>

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